Additional context for the last paragraph - Hillary's campaign did spend a lot more money on analytics and advertising, and a lot more energy (60 in-house mathematicians and analysts).

https://www.politico.com/magazine/story/2016/09/hillary-clin...

Overall, the Clinton campaign spent $1.184 billion dollars compared to $616 million by the Trump campaign.

https://www.bloomberg.com/politics/graphics/2016-presidentia...